Origin of so-called right and left ventricular arrhythmias in acute myocardial ischemia.

摘要: The anatomic origin of ventricular arrhythmias occurring immediately after coronary arterial ligation was studied in 32 dogs. electrocardiogram and seven single or composite bipolar electrograms were recorded from various sites within surrounding the ischemic area left right ventricles. Delay fragmentation activation epicardial zone ventricle, bridging diastole, preceded appearance continuous during rhythm disorders. So-called associated with similar delay activity. Multiple simultaneous both ventricles produced fusion premature complexes. exit points increased before fibrillation occurred. ultimate ectopic impulse formation is not necessarily related to one more either ventricle. Ischemic damage heart produces that appear originate site should be sole factor assessing benign malignant properties arrhythmia.